html,
body {
  padding: 0;
  margin: 0;
  font-size: 14px;
  height: 100vh;
  width: 100vw;
}

.ml_header {
  height: 40px;
}

.ml_body {
  height: calc(100vh - 40px - 0px);
  display: flex;
}
.ml_footer {
  height: 0px;
}
